/*
 * Copyright 2020 Sebastian Kaspari
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package recompose.parser.values

import org.xmlpull.v1.XmlPullParser
import recompose.parser.Parser

/**
 * Parses a integer attribute. Throws [Parser.ParserException] if the integer could not be parsed.
 */
internal fun XmlPullParser.integer(name: String): Int? {
    val value = getAttributeValue(null, name)

    return try {
        value?.let { Integer.parseInt(it) }
    } catch (e: NumberFormatException) {
        throw Parser.ParserException("Could not parse integer: $value", e)
    }
}
